乙基2-甲基-4-氧代-1H-喹啉-3-羧酸酯

ethyl ester of 2-methyl-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid

diethyl 2-(1-(phenylamino)ethylidene)malonate

2-(1-乙氧基亚乙基)丙二酸二乙酯

丙二酸二乙酯